Index: htdocs/kaMap.js
===================================================================
RCS file: /cvs/maptools/cvsroot/ka-map/htdocs/kaMap.js,v
retrieving revision 1.66
diff -u -r1.66 kaMap.js
--- htdocs/kaMap.js	7 Feb 2006 16:07:46 -0000	1.66
+++ htdocs/kaMap.js	7 Feb 2006 23:46:46 -0000
@@ -1417,6 +1417,9 @@
 kaMap.prototype.checkWrap = function()
 {

+	// adjust theInsideLayer so it doesn't show more than maxExtents (if set)
+	this.checkMaxExtents();
+
     this.xOffset = safeParseInt(this.theInsideLayer.style.left) + this.nCurrentLeft - this.xOrigin;
     this.yOffset = safeParseInt(this.theInsideLayer.style.top) + this.nCurrentTop - this.yOrigin;

@@ -1444,6 +1447,50 @@
 }

 /**
+ * kaMap.checkMaxExtents()
+ *
+ * For maps with maxExtent set, this function adjusts the position of
+ * theInsideLayer so it never shows more than the maximum extent specified
+ * in the mapfile.  Called from kaMap.checkWrap() since that is called
+ * with all movement of theInsideLayer
+ *
+ * Added by tschaub
+ */
+kaMap.prototype.checkMaxExtents = function()
+{
+	var maxExtents = this.getCurrentMap().maxExtents;
+	if(maxExtents.length == 4)
+	{
+		var minLeft = Math.round(this.xOrigin + this.viewportWidth - (maxExtents[2] / this.cellSize));
+		var maxLeft = Math.round(this.xOrigin - (maxExtents[0] / this.cellSize));
+		var maxTop = Math.round(this.yOrigin - (maxExtents[1] / this.cellSize));
+		var minTop = Math.round(this.yOrigin + this.viewportHeight - (maxExtents[3] / this.cellSize));
+		// check left and right - both can not be corrected
+		if(safeParseInt(this.theInsideLayer.style.left) < minLeft)
+		{
+			// extra on right
+			this.theInsideLayer.style.left = Math.round(minLeft) + 'px';
+		}
+		else if(safeParseInt(this.theInsideLayer.style.left) > maxLeft)
+		{
+			// extra on left
+			this.theInsideLayer.style.left = Math.round(maxLeft) + 'px';
+		}
+		// check top and bottom - both can not be corrected
+		if(safeParseInt(this.theInsideLayer.style.top) < minTop)
+		{
+			// extra on bottom
+			this.theInsideLayer.style.top = Math.round(minTop) + 'px';
+		}
+		else if(safeParseInt(this.theInsideLayer.style.top) > maxTop)
+		{
+			// extra on top
+			this.theInsideLayer.style.top = Math.round(maxTop) + 'px';
+		}
+	}
+}
+
+/**
  * internal function to reuse extra images
  * take last image from each row and put it at the beginning
  */